Why are the grades ranked from 1 to 5?

Our grading is based on defined guidelines. Here you can find out which ones.

"For the road surfaces of federal roads, the condition recording and assessment (ZEB) has been carried out since the beginning of the 1990s. Physical condition variables are calculated from the data of the measurement systems. Within the framework of standardisation, these condition variables are subsequently converted into dimensionless, uniformly scaled condition values in a grade range from 1 to 5 (see table)." Source: BVMI

The Recommendations for the Maintenance Management of Urban Roads (E-EMI-2012) is a modification of the ZEB guideline for the municipal sector. Among other things, the standardisation was adopted in the grades 1 to 5. Since the vialytics System is based on the specifications of the E-EMI-2012, the standardisation was adopted. 

Classification of condition values and colouring

According to BVMI and FGSV E-EMI-2012 p.16:

Condition class State value  Colour
1 1 - 1,5  blue
1,5 1,5 - 2 dark green
2 2 - 2,5
2,5 2,5 - 3 light green
3 3 - 3,5
3,5 3,5 - 4 yellow
4 4 - 4,5
4,5 4,5 - 5 red
5 >= 5






Source: BVMI


Our colouring is based on these specifications, but has been slightly adapted.

The condition of cobblestones can be recorded pictorially, but not evaluated algorithmically. For this reason, images that mainly show cobblestone are shown in grey.


The percentage behind a grade of the overall condition indicates the proportion of the recorded sections that received the respective rating. Due to rounding, the sum of the percentages may differ slightly from one hundred percent.